James h



March 24. 1925:

1,530,914 J. H. RODEN ELECTRIC GAS IGNITER Filed Sept. 8, 1925 LNVENTUR.

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Patented Mar. 24, 1925.

warren STATES JAMES H. RODEN, or rononro, QNTARIQQCANADA.

ELECTRIC Gas renrrnn.

Application filed September To all whoin may concem:

Be it known that I, JAMES H. Roman, of the city of Toronto, in the county of York,

' Province of Ontario, Canada, a subject of parts.

the King of Great Britain, have invented certain new and useful Improvements in Electric Gas Igniters,.of which the following is a specification.

This invention relates to gas igniters and more particularly to the type adapted for household or factory use in whichthe igniter is connected to the lamp circuittherein andis used to light gas or fuel vapor appliances and my objects are to so construct the igniter that it will be absolutely safe in use and to provide a device-which is simple in design and of few and readily assembled I attain my object by means of i the con- 'structions hereinafter described"and' illustrated thea'ccOmpanying drawings in which..

Fig. 1 1s a plan view of myimproved I device;

Fig. 2 a longitudinal cross section thereof on the line 2-2;

Fig. 3 a cross section of the same, on th line 3-3 in Fig. 2;

the line 44: in Fig. 2; and

Fig. 5 a horizontal sectionaldetail on the line 5-5 in Fig. 2.

1 is a casing of insulating material which is divided longitudinally to form two parts. Each part is formed with bosses 2 having holes therethrough for the passage-of the bolts 8 whereby the parts of the casing are held together. These bosses are arranged transversely of the casing and extend substantially to the line of division so that no portions of the bolts are exposed within the casing. In the casing is suitably carried the transformer 4c which is of ordinary construction and includes primary and secondary windings (not shown).

Each part of the casing is formed with an integral socket 5 and in these sockets is supported the base plate 6 of an ordinary switch including a push button 7 having an enlargement 8 formed on its lower end.

The button is guided in an opening 9 formed in each part of the' casing and the enlargement 8 is adapted to engage the wall of the casing to prevent the button being withdrawn through the opening 9. This enlargement is also adapted to engage the Fig. 1 a cross section of the same, on

8, 1923. Serial No. 661,691.

upper surface of the ribs 10 of the socket 5 whereby the downward push of. the button is limited to preventdamage to the switch. The transformer primary winding is connected by means of the circuit 11 through the medium of the switch 6 to a suitable source of electrical supply. The small low tension current induced in the secondary winding is used to heat a small resistance 'coil"12 which is' carried by a metal tube 13 supported in the casing 1 as follows. The casing .is provided" with a boss 14 .through which an openingv 15 is. formed which is adapted to :reoeive the tube 13.

:The division ofthe casin'g is formed through the'bossr and opening so that one half of each of them'is formed .in eaclr'part of the casingwhereby the tube'may be gripped or lclamped between the casing parts when they ;are in juxtaposition; To prevent the withdrawal of the tubejthrough the opening 15 I2 form laterally-extending lugs 16 on the tube, each lug adapted to engage a recess 17 formed in the" wallrof each portion'of the opening 15.' .These'lugs also prevent thetube turning relative to the casing. An insulating bushing 18 is. fitted in the end ofthe tube 13 that is remote from the cas- ,f'ing 1.- This bushing is preferably held in place by. displacing the metal of the tube to form an angular groove 19 and a shoulder 20, the latter being adapted to engage the inner end of the bushing. vThe' outer end of thetubeis also suitably displaced to form shoulders 21 adapted to engage the outer end of the bushing.

To a conductor 22 having an integral tang 23 adapted to be passed through an opening in the bushing 18, is connected, by means of a screw, one end of the resistance coil 12. The other end of this coil is connected, by means of a screw 24, to a perforated metal cap 25. This cap is fitted on the outer end of the tube 13 and secured thereon by pressing the inner end of the cap into the groove 19 formed in the periphery of the tube. It will be noted that the outer end of the coil 12 is passed through one of the perforations in the cap 25 and then secured under the head of the screw 24: to facilitate the assembly of the device.

The secondary winding of the transformer is connected, by means of a wire 26, with the'tang 23 and the secondary circuit is completed by a wire 26 connecting ing having an: opening: formedtherein, the

in a gas 1 appliance:-

the tube .13 With-thesecond-terminal 0f the secondary- Winding. To enable... the: latter connection to be easily made thetube is formed with an integral projection .27 ex: tending within the casing, thewire 26* being soldered to this projection.

The device is used by connecting the Wires of the circuit 11 to the household wiring 7 Which causes the current therein to flow through -the lprimary Winding of the transformer 4 when thevswitch: button 'i'is pushed down to :close the switch" 6.: The M induced current then flows from one terminal-of the transiormen secondary: windin through thewire 26, tang- L3, conductor 22, coil 12, cap 25, tube l'3, 'projecti=on 2T, wire-26 -to the second terminal of {the secondary Winding' thereby heating .up the resistance coil '12 which isadapted to ignite the gas pou-ring out-through the 1 burner outlet openings -What claim is: v V

1. An 'electric" gas igniter includingan igniting element' i-a di-videdcasing adapted to I carry "tho igniting elenient between: the

parts-thereofi and='shapedflto form a receptacle and gaswitc'h socket, the latter being "separate from the' =reeeptacle,i the division ofa'the casing 'being through the socket and the -receptacl'eg' agnd-a switch connected in a supply eircuit foruopeningand "closing said I 'ci'rcuit, the sWitch fheing-jcarried: in the w said soChet."v

QHAn-el'ectiid gas igniter including a cascasing -bGiIIg diYldBLi through the opening to: fonimtwo'part's; and. a tube adapted to be-rece1ved--1n--sa1d opening and carrying a "heating element, the. parts ofthe casing and tube beingadapted'to engage one another to prevent withdrawal of the tube while the parts oilthe casing are in uxtapositi on.

-' 31An electric gas igniter including a heating element, acasing having an opening formed therein, thecasing being formed in two parts, the division being through the said opening, each partfbeing provided with a lateral recesscommunicating with the said opening; and-a tube extending from the casing for carrying the said element and-adapted to be received witlnn the said opening and provided with lateral projections adaptedtobe received in the said recesses.

4. An electric gas igniter including a heating element, a casing having an opening formed therein, the casing-being formed in two parts, the division being through the opening, each part being provided. with a lateral recess communicating with the said opening; and a tube extending from the casing for carrying thesai-d element and adapted to be received within -the said opening and provided 'With laterally extending integral lugs adaptedtwbe eceived-in the said irecesses.

.5..An electric gas igniter including an igniting-element; .a.-- d i,v.ided casing adapted to carry the igniting eleinent between the parts-thereof and shaped to form a receptacle, a switch socket and a guide for a push button, the socket being separate fr in the receptacle, the division of the casing being through v the socket, guide and re ceptacle; a switch -connected"in a supply circuit,theswitchbeingcarried in the said socketportions; and aapushlbutton adapted'to actuate vthe switch and mounted in arev in juxtaposition-f 7. In .an 'el'eetriclgas igniter, acasing of insulating material formed 1n two parts, eacn-r-partahaivmgi a: boss tormed theremlextending substantially'to the line of. division of the. casing; and. :means passing: through the said boss for securing the partezofrthe casmgtogethen- 8. In an electric gas igniter, a casingvof insulating. material divided longitudinally to form two parts, eaclrpart' havingtransverselyvarrangedi bosses-formed therein extending substantially to the line of division of the casing; and'boltspassing through the said bosses for securingitlieparts oi the casing .togetherQ 9. In an electric gasigniter, adivided casing; and a tube carried by and extending from the said casing forcarrying a heating element having one and electrically connected to. the tube, the tube having antintegral projection adapted. toi extend Within thecasing to forman electric connection.

ills-In anelectric gasxigniter, a casing of" insulating -material a-metal tube carried. by and extending from the casing and forming part-of the igniter circuit and having-an insulati-ng bushing carried. at itsouter one; .aperforated cap secured to; the tube: a connecter also forming partof the ign-iter circuit and provided with a tang passed through the said bushing; a heating element electrically connected'to the connecter and to the said Soap 11'. An electricgasigniter constructed as set forth inclaim. 10in which the tube is formed with an annular displacement to provide a groove and a. shoulder, the latter b'ein; adapted to engageth'e bushing, the inner end offthe cap being adapted to be pressed into the said groove.

12. In an electric gas igniter including a casing having an opening therein, the casing being divided through the opening to form two parts, each part having a portion of a socket, including an upper rib, formed integrally therein; a normally open switch including a base plate adapted to be received in the said socket and connected in a supply circuit; and a push button for closing the switch adapted to be received in the opening and having an enlarged end adapted to prevent the withdrawal of the button when the parts of the casing are in juxtaposition, the enlarged end being adapted to engage the ribs to prevent damage to the switch when the button is depressed.

13. In an electric gas igniter, a. casing formed of insulating material and in two parts adapted to enclose a transformer and having integral parts therein adapted to engage the ends and sides of the transformer to position it.

ll. An electric gas igniter including an igi'iiting element; a casing divided longitudinally to form two parts, each part having a portion of a socket formed integrally therein; and a switch connected in a supply I circuit for opening and closing said circuit, the switch being carried in and substantially enclosed by the said socket:

15. An electric gas igniter including an igniting element; a casing divided longitudinally to form two parts, each part having a portion of a socket formed integrally therein and provided with inwardly projecting ledges; a switch connected in a supply circuit for opening and closing said circuit and having a base plate supported on said ledges and contained within the socket.

16. In an electric gas igniter, a casing of insulating material divided longitudinally to form two parts adapted to enclose and position a transformer, each part having transversely arranged bosses formed therein extending substantially to the line of division of the casing; and bolts passing through the said bosses for securing the parts of the casing together; the said bosses being adapted to shield the bolts from contact with the said transformer.

Signed at Toronto, Canada, this 5th day of September, 1923.

JAMES H. RODEN.

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